Crane mechanism.



D. KENDALL.

CRANE MECHANISM.

APPLICATION FILED MAY 1a, 1908.

909,804. Patented Jan. 12, 1909.

3 SHEETS-SHBET 1.

WITNESSES INVENTOH D. KENDALL.

URANE MECHANISM.

APPLICATION FILED MAY 18, 1908.

909,804. Patented Jan. 12, 1909.

- 3 BHEETSSHEET 2.

WITNESSES D. KENDALL.

CRANE MECHANISM.

APPLIIOATION FILED MAY 18, 1908.

Patented Jan. 12, 1909.

3 SHEETS-SHEET 3.

% Nahum WITNESSES wazm [ji lv sh nlivb UNITED STATES PATENT OFFICE.

DAVID KENDALL, OF ALLIANCE, OHIO. ASSIGNOR TO THE ALLIANCE MACiElINECOMPANY, OF ALLIANCE, OHIO, A CORPORATION OF OHIO.

CRANE MECHANISM.

"Patented Jan. 12, 1909.

APPliflatiohflled-Kay 18, 1908. SeriaI'NO. 433,133.

1'0 alfl whom itmay concern:

Be it known that 1, DAVID KENDALL, of Alliance, of'Ohio, have invented anew and useful Crane Mechanism, of which the following is a full, clear,

ings. forming which V Figure 1 is a side elevation of one form of cranemechanism, embodying my invention with the movablehridge broken away;Fig. 2 is a vertical section. of the same; Fig.

part of this specification, in

3 is a plan view of the trolley; and Fig. 4 is a portion of the chargingtherein by those skilled in the art, without departing from the spiritand scope of my invention as defined in the appended claims.

In these drawings, the numeral 2 desighates the usual movable cranebridge, which may be supported and moved in any usual or suitablemanner. Mounted to travel on this bridge is a trolley or carriage whichcarries the operating parts. This trolley consists of a rotatable uppersection 3, having peripheral gear teeth 4, engaged by the teeth of apinion 5, driven by a gear connection 6 with an electric motor 7,mountedon the lower and non-rotatable portion of the trolley. Therotatable upper portion 3 may be mounted onball-bearmgs 3 or otherantifriction devices, so that it will rotate freely andis provided withan extension 8, which passes downwardly between the girders 2 of thebridge, and which, at its lower end portion, bears within a ring 9,secured within a downward extension 10 of the lower section of thetrolley frame. The lower section of the trolley frame is provided with asuitable arrangement of wheels 11, which travel on the usual tracks,supported on the bridge girders, and the extenin the county of Stark andStateand exact description, reference being had to the accompanyingdraw-' sion 10 is provided at its lower end with ley and to prevent thederailment thereof.

13 designates a charging bar which extends vertically through thetrolley, being provided. with a guide 14, in the downward extension 8 ofthe rotatable u'pper trolley section. The lower end of the bar 13 isprovided with gripping tongs 15, of any suitable design, those which Ihave shown being substantially the same as those described and claimedin the patent to Israel & Kirk, No. 841,528, dated January 15, 1907.

-16 designates a hoisting drum which is suitably journaled in bearings17, and which is rotated by the train of reduction gearing 18, 19,. 20,21, 22 and 23, with an electric motor 24;. The drum 16 is provided withright and left groovedwinding portions 25 and 26, at its respective endportions, and

With an intermediate grooved winding portion 27. The bar 13 is raisedand lowered by means of this main drum 16, by two ropes or cables whichare secured at one end to said drum, and thence pass downwardly andaround two sheaves 28 and 29, which turn on a shaft- 30, fixed in thecharging bar 13,

the. other end portions of the ropes or cables being thence extendedupwardly and around sheaves 3 1, which rotate on a shaft 32, fixed tothe upper rotatable portion of the trolley frame. -1hese ropes or cablespass over these sheaves 31, and are connected to a suitable slacktake-up device 33. This slack take-up device may be of any suitablecharacter. As shown it is substantially similar to the patent to GeorgeW. Shem, Number 840,807,

.of January 8, 1907. The function of this device is simply to take upany slack in these two hoisting ropes or cables. I

3-1 is a sheave'which turns on a shaft 35, supported in a yoke 36, whichis within the hollow charging bar 13, the sides of said bar beingslotted to receive the sheave 3 1. This yoke 36 is slidably mounted inthe bar 13, and has a depending stem or rod 37, which passes downwardlythrough the bar 13, and is secured to the tongsroperating frame 38 by apin 39', working in the slots -10. Passing around the sheave 34 is arope or cable 41, one end of which is secured to the drum 16, and iswound upon the intermediate winding portion 27 thereof. The other end ofthis rope or cable is carried upwardly andis secured to a secondarywinding drum 42. This drum 42 is operated by a motor 43, through thetrain of reduction gearing 44. 45 is the motor which moves the trolleythrough the gearing 46.

The operation is as follows: The bar 13 is" raised and lowered by meansof the main hoisting drum l6, and motor 24. When the bar 13 is lifted,the tongs 15' close -on the ingot and grasp itstightly and lift. it upand to the desired point by proper movement of the trolley and cranebridge. To open the tongs, the motor 43 is operated, thereby winding therope or cable at on the secondary drum s2. w hen this motor is operatedin a hoisting direction, the tongs-operated frame 38 is lifted and thetongs opened. The sheaves 29 and 54 are of thesame diameters as are alsothe three winding portion s of the main drum 16. Therefore, when thecharging bar 13 is being rais'ed, after it has grasped an ingot, thesheave 3-land yoke 36 and the rod or stem 37 will be lifted at the samerate of speed as the charging bar. As the ingots are of rectangularshape, and are liable to be placed inany position. it is necessary thatthe tongs may be able to rotate or revolve so as to properly grasp theingot. This has been accomplished in previous cranes with which I amfamiliar by rotating the tongs alone; In the crane above described, thetongs, the charging bar and the upper section of the trolley frame areall rotated by the operation of the motor 7. e 2

The advantages of my invention will be apparent to those skilled in theart. The arrangement of the hoisting drum and cables for operating thecharging bar'are such as to g1ve a direct upward lift on said bar, whilethe provision of the secondary hoisting drum and motor enables thetongsoper'ating frame to be given an independent alllOVClllQIlt. Theentire arrangement is sim-v ple in its construction and operation.

What'I claim is: 1. In crane mechanism of the character described, thecombination of a movable trolley formed in two sections, one of which isrotatably mounted on the other, said sections having dependingextensions, the ex tension on the rotatable section being guided by theextension on the non-rotatable section, a vertical charging barextending through said extensions havinga gripping device at its lowerend,"a hoisting drum mounted on the trolley, sheaves journaled' to thecharging bar, and flexible connections passing around said sheaves andconnected to the hoisting drum, another sheave movably guided bytliecharging bar and connected to the gripping device, and independentlyoperated hoisting mechanism for the last named sheave, substantially asdescribed.

"depending hollow extensions in guiding an 2. In crane mechanism of. thecharacter described, a movable carriage or trolley formed in twosections one of which is rotary with respect to the other, and havingbearing engagement with each other, a vertically movable charging barextending upwardly through the trolley, sheaves journaled to saidcharging bar, hoisting mechanism having flexible connections to saidsheaves, a sheave loosely'guided in said bar, tongs mechanism suspendedfrom said sheave, and ;independent hoisting mechanism for the sheave,substantially as described.

3. In crane mechanism of the'character described, a crane bridge, atrolley mounted thereon and having its frame formed'in two sections, oneof which is rotatably mounted on the other, the relatively fixed sectionhaving an extension which depends through the bridge, andthe rotatablesection having 9. depending extension which has a bearing and guidingengagement with the first or carriage, hoistingnieans for raising andloweringsaid bar, tongs, and tongs-operating means carried by said bar,an independent hoisting device for the tongs-operating mechanism, meansfor causing the charging bar and tongs mechanism to turn with themovablelsection of the trolley, and means for rotating sald section therotatable section having a guide bearing on the fixed section below itspoint of support on the fixed section, substantially'as described.

5. In crane mechanism of the character described, a movable trolley or:carriage formed in two'sections, one of which is rotatably mounted onthe other, said sections having depending extensions, the extension onthe rotatable section being guided by the extension on the non-rotatablesection, substantially as described.

7 6. In crane mechanism of the character iiesc1'ibed,a bridge, and atrolley or carriage movably mounted thereon and formed in two sections,the upper section being rotatably mounted on the lower section, thelower section having a depending extension through the bridge and formedwith a guide at its lower portion, and the upper section having anextension provided with a bearing in said guide, substantially asdescribed.

7. In crane mechanisinof the character described, a crane bridge, atrolley or carriage movably mounted thereon, and formed fixed sectionand engaginig the lower surface in two sections, one of which isrotatably of the bridge, substantial y as described. '10 mounted on theother, each of said sections In testimony-whereof, 1 have hereunto sethaving an extension to the" lower side of the my hand.

- bridge, the extension on the relatively fixed DAVID KENDALL.

section having a guide for the extension on Witnesses:

the rotatable section, and bearing devices G. W. SHEM,

carried by the extension on the relatively Enwm N. Dmnn.

